"When I saw the video of her back under her bed like she was when she first came in, I wouldn't believe it if I hadn't seen it," Barry says.
Princess had once again become the timid, anxious dog who was first transferred here from another shelter five months ago.
And the difference between the Princess of just a week earlier and the Princess who now hides under the bed is like day and night.
Maybe that's because five months in any shelter is a long, long night for an animal's soul.
"Being in a kennel just gets to them," Barry says. "They're laying on a cement floor. They have beds in their kennels, but they're basically in a shell. There's constant barking.
"When the volunteers go home at 6 o'clock at night there's no one there until the next morning."
Indeed, a dog who, by all accounts, used to pounce on every opportunity to be around people, has sunk so far into herself, she doesn't leave her shelter within a shelter.
Perhaps, also this dog's Shelter Spring was so fleeting because she saw dog after dog find real homes.
And, as Mercado says, "Everybody seems to pass her by."
Friends of Collier County Domestic Animal Service